Influences of Processing Parameters on Dilution Ratio of Laser Cladding Layer during Laser Metal Deposition Shaping

Abstract:

Laser Metal Deposition Shaping (LMDS) is a state-of-the-art technology that combines rapid prototyping and laser processing. There are many factors affecting the quality, precision, microstructure and performance of LMDS-deposited parts. Among them, dilution ratio is a significant one since it is not only an important index to judge the laser cladding quality, but directly affects the interlayer bonding strength and performance quality of as-formed metal parts. Thus, the substantial LMDS experiments were performed to conclude the influence of processing parameters on dilution ratio of laser cladding layer. The results indicate that the influence degree of scanning speed is most significant, while that of laser power is relatively slight. In order to ensure the perfect forming quality and strong metallurgical bonding, it is necessary to choose suitable dilution ratio to accomplish the LMDS process.

• Periodical: Advanced Materials Research (Volume 549)
• Pages: 785-789
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.549.785
• Online since: July 2012
• Authors: Kai Zhang, Xin Min Zhang, Wei Jun Liu
• Keywords: Dilution Ratio, Laser Cladding, Laser Metal Deposition Shaping (LMDS), Processing Parameter, Stainless Steel 316

References

[1] David M. Keicher, John E. Smugeresky, Joseph A. Romero, Michelle L. Griffith and Lane D. Harwell: Using the Laser Engineered Net Shaping (LENS) Process to Produce Complex Components from a CAD Solid Model. Proc. SPIE 2993 (1997), pp.91-97.

DOI: 10.2172/554822

[2] Peter C. Collins: A Combinatorial Approach to the Development of Composition-Microstructure-Property Relationships in Titanium Alloys Using Directed Laser Deposition. Dissertation for the Doctoral Degree, The Ohio State University, Ohio (2004).

[3] Phillip Roger Pratt: Analysis of Thermo-Mechanical Characteristics of the LENSTM Process for Steels Using the Finite Element Method. M.S. Thesis, Mississippi State University, Mississippi (2008).

[4] J. Dutta Majumdar, A. Pinkerton, Z. Liu, I. Manna and L. Li: Microstructure Characterisation and Process Optimization of Laser Assisted Rapid Fabrication of 316L Stainless Steel. Applied Surface Science, Vol. 247(1-4) (2005), pp.320-327.

DOI: 10.1016/j.apsusc.2005.01.039

[5] Guang Yang, Wei Wang, Weijun Liu and Lanyun Qin: Laser In-Situ Synthesized TiC Reinforced Titanium Based Wear-Resistant Coating and Its Tribological Performance. Journal of Shenyang University of Technology, Vol. 33(3) (2011).

[6] Wen Guo: Microstructural Design of Mechanical Properties for Laser-Fabricated Stainless Steel Parts. Dissertation for the Doctoral Degree, University of Central Florida, Florida (2000).